SOLUTION: factor completely. Please help me. {{{x^2 + 4xy - 21y^2}}}

SOLUTION: factor completely. Please help me. {{{x^2 + 4xy - 21y^2}}}

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Question 6329: factor completely. Please help me.

Answer by bonster(299) (Show Source): You can put this solution on YOUR website!

(x+7y)(x-3y)
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